/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsEditorOnlyExp/Public/PolygonOnMeshTool.h
Extrude the current set of selected faces. Click in viewport to confirm extrude height.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(CallInEditor, Category=Actions, Meta=(DisplayName="Draw Polygon", DisplayPriority=1)) void DrawPolygon()